Advancing UK Aerospace, Defence, Security & Space Solutions Worldwide
  • Home
  • /
  • Defence
  • /
  • Sonardyne International appoints Graham Brown as Managing Director

Defence Security

Sonardyne International appoints Graham Brown as Managing Director

Marine technology provider Sonardyne International Ltd. has announced Graham Brown as its new Managing Director.

Above: Leading marine technology provider Sonardyne International Ltd. has announced Graham Brown as its new Managing Director.
Courtesy Sonardyne International

Graham, who takes over the role from John Ramsden on 1st April, has served on Sonardyne International’s board from 2008, most recently as Sales and Marketing Director and Deputy Managing Director.

Advertisement
ODU RT

John, who has been Sonardyne International’s Managing Director since 2009, is staying within the Sonardyne family, taking the role of CEO of Sonardyne Group, the newly formed parent company of Sonardyne International and its sister companies; Chelsea Technologies, EIVA, Wavefront and 2G Robotics.

“This is an exciting time for Sonardyne International,” says Graham. “Looking beyond the current, uniquely challenging business climate, we’ll continue to grow organically, in terms of our people, our technology offering and the global markets which we support - while upholding the service and support that we’re renowned for. But we’re now part of a wider group of companies, with access to a considerably enlarged portfolio of products and services that complement our own seabed-to-shore systems. We expect this to deliver significant operational benefits for our customers across the global energy, ocean science, civil and defence markets.”

“Next year will be Sonardyne’s 50th year in business and I’m proud to have played a significant role in the success of the company over the last two decades,” says John. “As we look forward to celebrating that half century milestone with Graham at the helm, our collective sights are focussed on the direction we’re headed in at the start of our second half century. As CEO of Sonardyne Group, I’m excited at the prospect of working with Graham and his counterparts across our business to support those who measure, navigate, communicate or explore the world’s waters and oceans, safely, responsibly and more efficiently than ever before.”

Advertisement
ODU RT

Graham is an Electromechanical Engineer by background with a first-class degree and Ph.D. He is also a Chartered Engineer, a Fellow of the Institute of Directors (IoD), a Fellow of the Institute of Marine Engineering Science and Technology (IMarEST), and a member of the Society for Underwater Technology (SUT). He contributes to a number of industry groups such as the Southern Region Council of the Energy Industries Council (EIC).

 

Advertisement
FIA2026 animated banner
RAF in Cyprus receive two HC Mk2s

Defence

RAF in Cyprus receive two HC Mk2s

22 June 2026

The Royal Air Force (RAF) in Cyprus has taken delivery of two Airbus H145 Jupiter HC Mk2 helicopters to 84 Squadron.

Zelim appoints John Cumming as Director of International Business Development

Defence

Zelim appoints John Cumming as Director of International Business Development

22 June 2026

Edinburgh based maritime technology company Zelim, has strengthened its leadership team with the appointment of John Cumming as Director of International Business Development.

SEA wins UKDI contract for 2025 AUKUS Maritime Innovation Challenge

Defence

SEA wins UKDI contract for 2025 AUKUS Maritime Innovation Challenge

22 June 2026

SEA has won a funding contract from UK Defence Innovation (UKDI) for the 2025 AUKUS Maritime Innovation Challenge.

ASG Aerospace appoints Greg Bagwell CB CBE as Executive Chairman

Aerospace Defence

ASG Aerospace appoints Greg Bagwell CB CBE as Executive Chairman

22 June 2026

ASG Aerospace has appointed Air Marshal (retd) Greg Bagwell CB CBE as Executive Chairman, who has over three decades of operational leadership in the Royal Air Force and extensive experience across the aerospace and defence sectors.

Advertisement
ODU RT
Milanion and RPAL expand Indonesian Navy USV programme

Defence Events

Milanion and RPAL expand Indonesian Navy USV programme

19 June 2026

At Eurosatory 2026 in Paris this week, Milanion Group and PT Republik Palindo Internasional (RPAL) agreed a significant expansion of their unmanned surface vessel (USV) programme for the Indonesian Navy, signing a new collaboration agreement that builds on a live contract already in implementation.

ADS appoints Matthew Reynolds as CIO

Aerospace Defence Security Space Events

ADS appoints Matthew Reynolds as CIO

19 June 2026

ADS Group - parent organisation of trade association ADS and Farnborough International - has appointed Matthew Reynolds as its Chief Information Officer (CIO).

Advertisement
ODU RT
Advertisement
FIA2026 animated banner